You can leave away the --progress rsync option if you don't want to see a progress report (xfer#x, to-check y/z) while copying. See Partitions for details of the partitions in flash (hence the /dev/mtdblock6).

Instead of using rsync you could also use one of the following ways to perform copying (please correct if not working)

You can leave away the --progress rsync option if you don't want to see a progress report (xfer#x, to-check y/z) while copying. See Partitions for details of the partitions in flash (hence the /dev/mtdblock6).

Instead of using rsync you could also use one of the following ways to perform copying (please correct if not working)